Port Mann Bridge
According to ICBC, 60 claims were filed Wednesday for incidents on the Port Mann Bridge, although not all of them may be from falling snow and ice.Sharon Hiemstra
/ Twitter

Port Mann Bridge
Mike Proudfoot, who heads the Crown corporation responsible for oversight and financing of the bridge, acknowledged that a coating on the cables to ensure snow does not drop on cars below did not work on Wednesday. But at a press conference, the CEO of the Transportation Investment Corp. repeatedly called Wednesday's weather an unusual, extreme event and stressed that the bridge meets Canada's building code. Others disagreed that the weather was unusual or extreme.James Lepp
/ Twitter

Second Severn Crossing in England/Wales
The Second Severn Crossing is a cable-stayed bridge that crosses the River Severn between England and Wales. It opened in 1996.'
/ halcrow.com

Second Severn Crossing in England/Wales
The bridge is 5.1 km long, and the cable-stayed section of the crossing is some 900 metres long. The bridge carries 60,000 vehicles per day.'
/ flickriver.com

Second Severn Crossing in England/Wales
In February 2009, the bridge was closed after three vehicles were struck by falling ice, damaging windshields. In December 2009, falling ice again led to the closure of the bridge.'
/ Wikipedia

Uddevalla Bridge in Sweden
The Uddevalla Bridge is a cable-stayed bridge crossing Sunninge sound in Sweden. It is 1712 metres in length.'
/ bridge-info.org

Uddevalla Bridge in Sweden
The bridge has had problems with ice sticking to its cables in winter, and is closed a few times a year for this reason.'
/ panoramio.com

Uddevalla Bridge in Sweden
According to Dartmouth College’s Thayer School of Engineering, engineers in Sweden have covered the bridge in a 12-millimetre-thick foil, as part of a “thin-film pulse electrothermal de-icing” system designed to keep the bridge’s cables from icing over.'
/ Skyscrapercity.com

Leonard P. Zakim Bunker Hill Memorial Bridge in Boston
In March 2005, ice fell off the cables and landed on the roadway below in large enough chunks to possibly break windshields.'
/ Wikipedia

Leonard P. Zakim Bunker Hill Memorial Bridge in Boston
The Boston Globe reported that officials and the engineer who designed the bridge dismissed concerns about the ice falling from the span's cable stays, calling the occurrence a “fluke” caused by the weather.'
/ Wikipedia

Veterans’ Glass City Skyway in Toledo, Ohio
The Veterans’ Glass City Skyway, which is commonly called the Toledo Skyway Bridge, is a cable-stayed bridge across the Maumee River in Toledo, Ohio that opened in 2007.'
/ toledoperspectives.blogspot.com

Veterans’ Glass City Skyway in Toledo, Ohio
The main span approaches are about 1,220 meters north of the river and 1,020 metres south.'
/ flickriver.com

Veterans’ Glass City Skyway in Toledo, Ohio
Lane closures have been required due to ice falling from its cables. Though the problem was discussed during the design process, it was deemed too unlikely an occurrence to require countermeasures, according to the Ohio Department of Transportation. The Toledo Blade reported that in 2007, the bridge was closed for several hours after an ice storm, followed one day later by steady rain, caused chunks of ice to fall onto the bridge. “We had freezing rain and ice for three days, so there was a good accumulation. Then we had all that rain, which made it melt, and it just started peeling off,” ODOT spokesman Theresa Pollick said. “You have to think how often that happens. It's just a rare situation.” The bridge was also shut down in March 2011 when ice formed on top of the bridge over one night and the next morning. When temperatures rose later that day, the ice melted and fell onto the road in large pieces.'
/ dot.state.oh.us

Russky Bridge in Vladivostok
The Russky Bridge crosses the Eastern Bosphorus Strait in Vladivostok. It was completed in July 2012.'
/ nce.co.uk

Russky Bridge in Vladivostok
The bridge is the world's longest cable-stayed bridge, with a central span of 1104 metres.'
/ redhotrussia.com

Russky Bridge in Vladivostok
The bridge is located in an area with severe climate conditions. Temperatures vary from minus 31 C to 37 C. In winter, ice up to 70 centimetres in thickness can form. The protective housings of the cable stays are made from high-density polyethylene and feature UV resistance as well as resistance to local climate conditions.'
/ Wikipedia.com

Øresund Bridge in Sweden/Denmark
“The 491-metre cable-stayed main span is the longest of this type in the world. A girder and cable-stayed design was chosen to provide the rigidity necessary to carry heavy rail traffic, and also to resist large accumulations of ice,” Wikipedia says.Courtesy
/ wikipedia.com

The new, $3.3-billion Port Mann Bridge was shut down for four hours Wednesday after ice bombs fell from its cables, damaging the windshields on dozens of cars and causing one person to be knocked unconscious.

The issue has surfaced before on cable-stayed bridges around the world.

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Photos: The Port Mann and other cable-stayed bridges around the world with ice issues

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